At inclusion all patients will undergo a standardised work-up including history, physical examination, blood and faeces samples and ileo-colonoscopy. Within two weeks MRI, CT scanning of the small intestine (on the same day in randomised order) and capsule endoscopy will be performed in all patients. Capsule endoscopy will not be performed in patients with small bowel stenosis confirmed at ileo-colonoscopy, MRI and/or CT. All three investigations will be described in a similar predefined standardized fashion with the radiologist blinded to the findings at ileo-colonoscopy. In the randomised part of the study the physician in charge of the patient will be randomised to receive the result of either MRI, CT og capsule endoscopy.